It is really terrible to have diabetes at such a small age. I’ll definitely pray to Baba Sai to cure the child and bless him with good health and life ahead. But also need to take care, with other treatment also make your child to practice yoga. Spare some time, after consulting with an expert. After meals at night should practice “Vajrasana” for 5 to 15 minutes. The cure is possible for diabetes if complete care is taken in terms of meals, medicines and exercises. Trust Baba, He will do something. (You can search on google for Vajrasana and a few more Asanas, if find any difficulty, mention in this thread, I’ll try to help within my limits).